At this stage of this ministry's development I've recruited two people to help do the initial brainstorming and planning work: Kirk and Angela. Kirk pointed me to this resource which proposes a much more organic and simplified way of structuring the business plan: The Business Model Canvas. Invented by Alexander Osterwalder, the Business Model Canvas puts all the relevant information into a one-page format. Here is a one-hour lecture explaining the model and giving a real-life case example.
Our first sit-down with the model produced a lot of good material and thoughts, but we have a long way to go to fit things into the categories provided by this particular model. It certainly isn't the only planning document we will ever need, but it will be quite helpful in articulating what we plan to accomplish and how we plan to do it! I appreciate the aesthetics of the BMC model: it's spatial rather than linear and forces one to deal with constraints.
I'll post more as things continue to develop. I have a feeling that the BSC for Messiah Commons is about to take over one of my whiteboards for a while!